Wet's calculator EI dosing (N P K ..etc discussion)

[tureblue82]

Hi guys and experts.

Recently been fiddling around with nutrient calculators, specifically http://petalphile.com/#splash Wet's.

I entered my tank as a roughly 80L and chose flourish phosphorous, EI daily.

Result was asking me to dose 11ml of it into the tank daily to achieve 0.6ppm PO4.


Anyone really dose so much daily?

[Suzerolt]

It really depends on how heavily planted & the take up rate. Best to measure with a test kit.

But yes, generally Flourish phosphorous is quite diluted.
Think it'll be way cheaper to buy dry KH2PO4 & dose ~ 1g several times a week.

[Allan Asis]

I do have to dose 8-10ml of seachem flourish phosphorus daily to achieve a healthy and lush looking plants that I keep - hydrocotyle tripartita, staurogyne repens. those 2 plants seem to demand so much P and the first ones to show deficiency (dark green leaves on S. repens and curly leaves on tripartita).
And at the end of the week before water change, I still end up measuring 0ppm phosphate.
On top of that, I also have to dose 5ml seachem flourish potassium daily to keep up with the plants.

This is the reason I'm now switching to dry fertilizers as the flourish line is burning a hole in my pocket. Flourish phosphorus is 0.3% PO4 solution.

[tureblue82]

It really depends on how heavily planted & the take up rate. Best to measure with a test kit.

But yes, generally Flourish phosphorous is quite diluted.
Think it'll be way cheaper to buy dry KH2PO4 & dose ~ 1g several times a week.

what tea spoon do you use??

I do have to dose 8-10ml of seachem flourish phosphorus daily to achieve a healthy and lush looking plants that I keep - hydrocotyle tripartita, staurogyne repens. those 2 plants seem to demand so much P and the first ones to show deficiency (dark green leaves on S. repens and curly leaves on tripartita).
And at the end of the week before water change, I still end up measuring 0ppm phosphate.
On top of that, I also have to dose 5ml seachem flourish potassium daily to keep up with the plants.

This is the reason I'm now switching to dry fertilizers as the flourish line is burning a hole in my pocket. Flourish phosphorus is 0.3% PO4 solution.

how big is your tank and the plant density?

[Allan Asis]

what tea spoon do you use??



how big is your tank and the plant density?

65L tank (60x30x36cm)
4bps CO2
2x24W T5HO
mixed soup of plants lol! - monte carlo, hydrocotyle tripartita, hydrocotyle Leucocephala, reinikki roseafolia, staurogyne repens, luwdigia sp. red. rotala indica, blyxa japonica, java moss.

Typically when using dry fert. you get a bottle of water, preferrably distilled but not necessary. Measure its volume and add in a measured amount of dry fert. What I did with mine yesterday is:
purchase 1500ml distilled water (those 1$ from shops)
add in 30g KH2PO4 (I use a digital kitchen weighing scale with 1g resolution, you can buy this for 10-20$ depending on quality)
the solution is 2% PO4. for a 65L tank, I will have to dose 5ml of that to reach 1ppm of PO4.

[Allan Asis]

I can actually dial down dosing to half if I wanna save up and I won't see any algae bloom. But in time, plants start to show deficiency and leaves dying. If I ignore it, dead organic matter build up may trigger algae bloom for me.
But since there's an option to go for much cheaper fertilizer without actually suffering from quality, I shouldn't be starving the plants from it.

[Suzerolt]

what tea spoon do you use??

I used this spoon. Roughly 0.5g of KH2PO4 powder. Does not need to be super accurate since this is EI methodology.

[tureblue82]

wow thanks guys, in time i think i need to get a kitchen scale also. haha

Aquarium is Science!!

[Phillipians]

I bought a kitchen scale off Qoo10. Haha $14 bucks I think. Much cheaper than departmental stores. I like to mix them with distilled water and dose via squirting; that way i do not get my hands dirty hahah. I use Muji dispensers and they are pretty accurate. The 600ml ones dispense 3ml per squirt and the small 300ml ones dispense 1ml per squirt

[tureblue82]

yes, i went to qoo and looked up on it too but the spoon size is really big.

[Suzerolt]

The spoon I use is from either daisy or robinsons. It's the type used for salt/msg containers


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